Over the course of the year, 7.3 billion people, or 90% of humanity, endured at least 10 days of high temperatures that were made at least three times more likely because of climate change.
The peer-reviewed report says burning gasoline, coal, natural gas and other fossil fuels that release planet-warming gases like carbon dioxide, and other human activities, caused the unnatural warming from November 2022 to October 2023.
The last 12 months were the hottest Earth has ever recorded, according to a new report by Climate Central, a nonprofit science research group.